private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
long head = -1;
string name;
SaveFileDialog newFile = new SaveFileDialog();
newFile.Title = "New File";
newFile.DefaultExt = "bin";
newFile.Filter = "Bin Files (*.bin)| *.bin";
newFile.AddExtension = true;
if (newFile.ShowDialog() == DialogResult.OK)
{
toolStripStatusLabel1.Text = "File created at: " + newFile.FileName;
file = new AuxFile();
name = newFile.FileName;
file.fileName = name;
file.stream = new FileStream(name, FileMode.Create);
if (file.stream != null)
{
BinaryWriter binaryWriter = new BinaryWriter(file.stream);
binaryWriter.Write(head);
binaryWriter.Close();
}
else
{
MessageBox.Show("The file cannot be created.");
}
}
}
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
OpenFileDialog open = new OpenFileDialog();
open.Filter = "Bin Files (*.bin)| *.bin";
if (open.ShowDialog() == DialogResult.OK)
{
file = new AuxFile();
if (file.stream != null)
{
file.stream.Close();
}
name = open.FileName;
file.fileName = name;
file.stream = new FileStream(name, FileMode.Open);
BinaryReader reader = new BinaryReader(file.stream, Encoding.UTF8);
if (file.stream.Length != 0)//Mientras no sea fin de archivo
{
file.stream.Position = 0;
long head = reader.ReadInt64();
long pos = head;
if (head != -1) //Si hay entidades
{
pos = head; //Declarar un auxiliar
while (pos != -1) //Mientras exista minimo una entidad
{
file.stream.Position = pos; //Asignar la cabecera a la posicion del archivo
Entity newEntity = new Entity(); //Carga entidad
newEntity.name = reader.ReadChars(30);
newEntity.entityDir = reader.ReadInt64();
newEntity.attributeDir = reader.ReadInt64();
newEntity.dataDir = reader.ReadInt64();
newEntity.nextDir = reader.ReadInt64();
string name = new string(newEntity.name);
comboBox1.Items.Add(name); //Agrega la entidad creada al combobox para visualizar
if (newEntity.attributeDir != -1) //si existe atributos en la entidad
{
Attribute newAtt = new Attribute(); //= CapturAt(nuevaEnt.DirAtrib);//Carga atributo
file.stream.Position = newEntity.attributeDir;
newAtt.name = reader.ReadChars(30);
newAtt.type = reader.ReadChar();
newAtt.length = reader.ReadInt32();
newAtt.attributeDir = reader.ReadInt64();
newAtt.indexType = reader.ReadInt32();
newAtt.indexDir = reader.ReadInt64();
newAtt.nextAttDir = reader.ReadInt64();
newEntity.attributes.Add(newAtt);
/*if (newAtt.indexType != -1)
* {
*
* R.BaseStream.Seek(newAtt.indexDir, SeekOrigin.Begin);
* if (newAtt.iIndice == 2)
* {
* for (int p = 0; p < 10; p++)
* {
* Mpk = new Pk();
* if (newAtt.cTipo == 'C')
* {
* auxPk = string.Empty;
* NomPk = R.ReadChars(newAtt.iLongitud);
* for (int i = 0; i < NomPk.Count(); i++)
* {
* auxPk += NomPk[i];
* }
* Mpk.oClave = auxPk;
* Mpk.lDireccion = R.ReadInt64();
* ent.ListPk.Add(Mpk);
* }
* else
* {
* auxPk = string.Empty;
* Mpk.oClave = R.ReadInt32();
* Mpk.lDireccion = R.ReadInt64();
* ent.ListPk.Add(Mpk);
* }
* }
* }
*
* if (newAtt.iIndice == 3)
* {
* for (int f = 0; f < 5; f++)
* {
* Mfk = new Fk();
* if (newAtt.cTipo == 'C')
* {
* auxFk = string.Empty;
* NomFk = R.ReadChars(newAtt.iLongitud);
* for (int i = 0; i < NomFk.Count(); i++)
* {
* auxFk += NomFk[i];
* }
* Mfk.oClave = auxFk;
* for (int d = 0; d < 10; d++)
* {
* Mfk.lDirecciones.Add(R.ReadInt64());
* }
* ent.ListFk.Add(Mfk);
*
* }
* else
* {
* Mfk.oClave = R.ReadInt32();
* for (int d = 0; d < 10; d++)
* {
* Mfk.lDirecciones.Add(R.ReadInt64());
* }
* ent.ListFk.Add(Mfk);
* }
* }
* }
* if (newAtt.iIndice == 4)
* {
* Nodo n;
* Nodo nuevo = LeeNodo(newAtt.lDirIndice);
* ent.listNodos.Add(nuevo);
* if (nuevo.cTipo == 'R')
* {
* for (int i = 0; i < nuevo.iDatos.Count + 1; i++)
* {
* n = LeeNodo(nuevo.lDirecciones[i]);
* ent.listNodos.Add(n);
* if (n.cTipo == 'I')
* {
* for (int j = 0; j < n.lDirecciones.Count; j++)
* {
* Nodo nh = LeeNodo(n.lDirecciones[j]);
* ent.listNodos.Add(nh);
* }
* }
* }
* }
* }
* }
* /*if (newAtt.lDirSigAtributo != -1)
* {
* R.BaseStream.Seek(newAtt.lDirSigAtributo, SeekOrigin.Begin);
* }*/
while (newAtt.nextAttDir != -1) // Mientras exista otro atributo
{
Attribute aux = new Attribute();
file.stream.Position = newAtt.nextAttDir;
aux.name = reader.ReadChars(30);
aux.type = reader.ReadChar();
aux.length = reader.ReadInt32();
aux.attributeDir = reader.ReadInt64();
aux.indexType = reader.ReadInt32();
aux.indexDir = reader.ReadInt64();
aux.nextAttDir = reader.ReadInt64();
newAtt = aux;
newEntity.attributes.Add(newAtt);//Agrega el siguiente atributo
}
}
entities.Add(newEntity); //Agrega la entidad a memoria
addDataAttribute(newEntity);
pos = newEntity.nextDir; //Asigna a pos la dirreccion de la siguiente entidad
}
}
else
{
MessageBox.Show("ARCHIVO VACIO");
}
}
else
{
MessageBox.Show("ARCHIVO VACIO");
}
addData(); //Muestra los datos de la entidad en el data grid
reader.Close(); //Cierra la lectura actual
file.stream.Close(); //Cierra la secuencia actual
toolStripStatusLabel1.Text = "File " + name + " opened.";
}
}
